My current setup is..
APU - a10 7870k
Motherboard - g1 sniper a88x
RAM - 4x1gb hyperX 1866
What is more effective.. replacing RAM with 16gb 2400 c10 or buying an r7 250(for crossfire) and another 4x1gb hyperX 1866..
Do i need higher frequency RAM if I'm about to use crossfire?